Do you want to know the overhead crane‘s production process?
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Cutting
Paving and Welding of upper cover plate
Welding of clapboards
Welding of web plate and longitudinal bars between meshs
Trihedral molding
Welding of lower flange
Welding of four lines (automatic welding)
Shot blasting
Test on crane
Primer painting and Finish coat painting
Packaging
Truck loading http://www.clescrane.com/equipment/overhead-cranes.html